THE GO CYGNI SYSTEM - A NEAR-CONTACT ECLIPSING BINARY

The GO Cygni system is a short period -0.7177 days-eclipsing binary wi th a beta Lyrae-type light curve. In this study our new BV photoelectr ic observations of the system, made at the Bucharest Observatory durin g 1993-94 are presented. These, and our old ones -made at the Kryoneri on Astronomical Station of the National Observatory of Athens, Greece, in 1985- are analysed using Wood's program. The geometrical elements of the system -derived from the present analysis-correspond to a conta ct configuration suggesting that it belongs to the so-called near cont act binaries. Moreover, its physical parameters lead to an unevolved s ystem with both of its components located very close to the ZAMS. Fina lly, its orbital period is examined and found to show continuous incre ased.